Yes, with the help of App Clone functionality, you can use 2 WhatsApp accounts in Gionee X1 at the same time.
Gionee X1 is just 154 Grams.
No. Despite of having huge 3000 mAh battery, Gionee X1 has not reported any heating issue during our review.
Yes, Gionee X1 does have a fingerprint sensor, which is located on the back side of the phone.